I schedule my days really disjointed. I'm not real productive when I don't get much sleep, so I play off that to my advantage.
Mondays I work 7 am to 2 am tuesday. Then I sleep until 6, getting me 4 hours of sleep.
Tuesday I then do things that don't require thinking, like a lot of busy work. I then go to bed at 11 PM, and sleep until 6 ( 7 hours of sleep)
Wednesday I'm well rested, so I work 7 am to 2 am again. Then I sleep until 6, again netting me 4 hours of sleep.
Thursdays again I do things that don't require thinking, and go to bed about 11 pm, sleeping until 6. Thats 7 hours of sleep.
Then Fridays, again I work about 7 am to 2 am.
I crash and burn on the weekends, putting in about 8 hours/day of work but then most the time is "family time" because family is a priority. Family doesn't care if I'm not sharp though. so ti works out well. Go to bed about 11, sleep until about 8/9 to make up for it.
When its all said and done, my schedule looks like:
4 h, 7h, 4h, 7h, 4h, 9h, 9h
Thats an average of 6.3 hours a night, but I find 6.3 hours a night isn't enough for me. Thats because I'm an 8h kind of guy, and really need more like 8 hours a night. This method frees up 12 hours a week of extra work potential though, which generates massive cash annually.... thats 624 extra hours of work!
its not just work though, I end up getting 57 hours of high quality work, and 16 hours or so of lower quality work, then Tuesday Night is date night with my wife and Thursday night is family night with the kids. That means I get 73 hours of work M-F while still having family time and wife time, plus about 16 hours of work on the weelend, which brings me to about 89 hours or so, all while keeping my family happy!
I did a lot of research, and while a lot of research said that you should have the same amount of sleep every night, there's also a lot of research that talks about sleep cycles. If 4 hours recharges me about the same as 6 hours, then why not let this sleep schedule work.